Cyclic urea derivatives, pharmaceutical compositions containing these compounds and processes for preparing them

Abstract

The invention relates to cyclic urea derivatives of general formula <IMAGE> (I) wherein Ra, Rb, X and Y are as defined herein, pharmaceutical compositions containing the derivatives and processes for preparing them.

What is claimed is: 
     
       1. A cyclic urea derivative of the formula ##STR24## wherein X, represents a carbonyl group; Y represents an ethylene group;   one of the groups R a  or R b  represents a group of thc formula   A--B----C--     wherein A represents a straight-chained or branched C 1-5  -aminoalkyl group, an amino, amidino or guanidino group, whilst in each of the above-mentioned groups at one of the nitrogen atoms, one or two hydrogen atoms may be replaced by a C 1-4  -alkyl or one hydrogen atom may be replaced by a C 2-5  -alkoxycarbonyl group or by an alkylcarbonyl, arylcarbonyl, aryloxycarbonyl or aralkoxycarbonyl group, or A may represent a cyano group or a cyanoalkyl group having 1 to 4 carbon atoms in the alkyl moiety;   B represents a bond, and   C represents a phenylene group which may be mono- or disubstituted by fluorine, chlorine or bromine atoms, by C 1-4  -alkyl groups, by trifluoromethyl, hydroxy, alkoxy, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, (R 1 ) 2  N--,(R 1 ) 2  NCO--,(R 1 ) 2  NSO 2  -- or nitro groups or by R 1  NH-groups substituted by an alkylcarbonyl, aralkylcarbonyl, arylcarbonyl, heteroarylcarbonyl, alkylsulphonyl, aralkylsulphonyl or arylsulphonyl group, whilst the substituents may be identical or different;     the other of the groups R a  or R b  represents a group of the formula   F--E--D--     wherein D represents a cyclohexaline group optionally substituted by an alkyl, aralkyl or aryl group, wherein one CH moiety is replaced by a nitrogen atom, whilst additionally one methylene group adjacent to the nitrogen atom may be replaced by a carbonyl group;   E represents a C 1-5  -alkylene group or a C 2-5  -alkenylene group, each of which may be substituted by one or two alkyl groups, or by a hydroxy, alkoxy, amino, alkylamino, aralkylamino, dialkylamino, bis(aralkyl)amino, carboxyalkyl, alkoxycarbonylalkyl or aralkoxycarbonylalkyl group; and     F represents a carbonyl group substituted by a hydroxy or C 1-6  -alkoxy group, whilst a C 1-3  -alkoxy group may be substituted in the 1-, 2- or 3-position by an aryl group, whilst if A represents a cyano group or an amino or aminoalkyl group optionally benzoylated or benzyloxy-carbonylated at the nitrogen atom, the shortest spacing between the nitrogen atom of these groups and group F is at least 10 bonds;     or a tautomer or salt thereof,   and, wherein, unless otherwise specified,   the above-mentioned alkyl, alkylene, alkenylene or alkoxy moieties may each contain 1 to 3 carbon atoms, and   the term "an aryl group" used above denotes a phenyl group which may be monosubstituted by a trifluoromethyl, carboxy, (R 3 ) 2  NCO--, alkoxycarbonyl, alkylcarbonyl, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, nitro, (R 3 ) 2  N--, alkylcarbonyl-NR 3  -, aralkylcarbonyl-NR 3  -, arylcarbonyl-NR 3  -, heteroarylcarbonyl-NR 3  -, alkylsulphonyl-NR 3  -, aralkylsulphonyl-NR 3  -, arylsulphonyl-NR 3  - or (R 3 ) 2  N-sulphonyl group or may be mono-, di- or trisubstituted by fluorine, chlorine or bromine atoms or by hydroxy, alkoxy or alkyl groups having 1 to 4 carbon atoms.   
     
     
       2. A cyclic urea derivative as recited in claim 1, wherein X represents a carbonyl group;   Y represents an ethylene group;   one of the groups R a  or R b  represents a group of the formula   A--B--C--     wherein A represents a straight-chained or branched C 1-5  -aminoalkyl group, an amino, amidino or guanidino group, whilst in each of the above-mentioned groups, at one of the nitrogen atoms, one or two hydrogen atoms may be replaced by a C 1-4  -alkyl group or a hydrogen atom may be replaced by a C 2-5  -alkoxycarbonyl group, by an alkylcarbonyl, arylcarbonyl, aryloxycarbonyl or aralkoxycarbonyl group, or A represents a cyano group or a cyanoalkyl group having 1 to 4 carbon atoms in the alkyl moiety;   B represents a bond; and   C represents a phenylene group which may be mono- or disubstituted by fluorine, chlorine or bromine atoms, by C 1-4  -alkyl groups, by trifluoromethyl, hydroxy, alkoxy, alkylsulphenyl, alkylsulphinyl, alkylsulphonyl, (R 1 ) 2  N--, (R 1 ) 2  NCO--, (R 1 ) 2  NSO 2  -- or nitro groups or by R 1  NH- groups substituted by an alkylcarbonyl, aralkylcarbonyl, arylcarbonyl, heteroarylcarbonyl, alkylsulphonyl, aralkylsulphonyl or arylsulphonyl group, the substituents being identical or different;     the other of the groups R a  or R b  represents a group of the formula   F--E--D--     wherein D represents a cyclohexylene group wherein one CH moiety in 1-position relative to E is replaced by a nitrogen atom, whilst additionally one of the methylene groups adjacent to the nitrogen atom may be replaced by a carbonyl group;   E represents a C 1-5  -alkylene group or a C 2-5  -alkenylene group, each of which may be substituted by one or two alkyl groups, or by a hydroxy, alkoxy, amino, alkylamino, aralkylamino, dialkylamino, bis(aralkyl)amino, carboxyalkyl, alkoxycarbonylalkyl or aralkoxycarbonylalkyl group;   F represents a carbonyl group which is substituted by a hydroxy or C 1-6  -alkoxy group, whilst a C 1-3  -alkoxy group may be substituted in the 1-, 2- or 3-position by an aryl group, whilst if A represents a cyano group or an amino or aminoalkyl group optionally benzoylated or benzyloxycarbonylated at the nitrogen atom, the shortest distance between the nitrogen atom of these groups and the group F is at least 10 bonds;     or a tautomer or salt thereof.   
     
     
       3. A cyclic urea derivative as recited in claim 1, wherein X represents a carbonyl group;   Y represents an ethylene group;   one of the groups R a  or R b  represents a group of formula   A--B--C--     wherein A represents a straight-chained or branched C 1-4  -aminoalkyl group, an amino-, amidino or guanidino group, whilst in each of the above-mentioned groups, at one of the nitrogen atoms, one or two hydrogen atoms may each be replaced by a C 1-4  -alkyl group or a hydrogen atom may be replaced by an alkoxycarbonyl group having a total of 2 to 5 carbon atoms or by a benzyloxycarbonyl group;   B represents a bond;   C represents a phenylene group which may be substituted by one or two methyl groups, by a fluorine, chlorine or bromine atom, by a methoxy, methylsulphenyl, methylsulphinyl, methylsulphonyl, nitro, amino, acetylamino, benzoylamino or methanesulphonylamino group;     the other of the groups R a  or R b  represents a group of formula -ti F--E--D   wherein D represents a piperidinylene group bound via the 1-position to E   E represents a C 1-3  -alkylene group optionally substituted by one or two methyl groups or by a hydroxy, methoxy, amino, dimethylamino, dibenzylamino, carboxymethyl or methoxycarbonylmethyl group, or E represents a C 2-3  -alkenylene group; and   F represents a carbonyl group which is substituted by a hydroxy group, by a C 1-4  -alkoxy group or by a phenylalkoxy group having I or 2 carbon atoms in the alkoxy part, whilst if A represents an amino or aminoalkyl group optionally benzyloxycarbonylated at the nitrogen atom, the shortest distance between the nitrogen atom of this group and group F is at least 10 bonds;     or a tautomer or salt thereof.   
     
     
       4. A cyclic urea derivative as recited in claim 1, wherein X represents a carbonyl group;   Y represents an ethylene group;   one of the groups R a  or R b  represents a group of the formula   A--B--C--     wherein A represents a straight-chained or branched C 1-4  -aminoalkyl group, an amino or amidino group, whilst in each of the above-mentioned groups, at one of the nitrogen atoms, a hydrogen atom may be replaced by an alkoxycarbonyl group having a total of 2 to 5 carbon atoms or by a benzyloxycarbonyl group;   B represents a bond;   C represents a phenylene group which may be substituted by one or two methyl groups, by a fluorine, chlorine or bromine atom, or by a methoxy, methylsulphenyl, methylsulphinyl, methylsulphonyl, amino, acetylamino, benzoylamino or methanesulphonylamino group;     the other of the groups R a  or R b  represents a group of formula   F--E--D--     wherein D represents a piperidinylene group bound via the 1-position to E;   E represents an ethylene group optionally substituted by one or two methyl groups or by an amino or dibenzylamino group, or     an ethenylene group; and F represents a carbonyl group which is substituted by a hydroxy group or by a C 1-4  -alkoxy group, whilst if A represents an amino or aminoalkyl group optionally benzyloxycarbonylated at the nitrogen atom, the shortest distance between the nitrogen atom of this group and the group F is at least 10 bonds;     or a tautomer or salt thereof.   
     
     
       5. A cyclic urea derivative as recited in claim 1, wherein X represents a carbonyl group;   Y represents an ethylene group;   one of the groups R a  or R b  represents a group of formula   A--B--C--     wherein A represents an aminomethyl or amidino group optionally substituted by an alkoxycarbonyl group with a total of 2 to 5 carbon atoms;   B represents a bond; and   C represents a 1,4-phenylene group;     the other of the groups R a  or R b  represents a group of the formnula   F--E--D--     wherein D represents a 1,4-piperidinylene group bound via the 1-position to E;   E represents an ethylene group optionally substituted by an amino or dibenzylamino group, or an ethenylene group;   F represents a carbonyl group substituted by a hydroxy group or by a C 1-4  -alkoxy group, whilst if A represents an aminomethyl group, the shortest distance between the nitrogen atom of this group and the group F is at least 10 bonds;     or a tautomer or salt thereof.   
     
     
       6. A compound of the formula I according to claim 1, wherein X represents a carbonyl group;   Y represents an ethylene group;   R a  represents a group of formula   A--B--C--     wherein A represents an amidino group optionally substituted by an alkoxycarbonyl group with a total of 2 to 5 carbon atoms;   B represents a bond; and   C represents a 1,4-phenylene group;     R b  represents a group of the formula   F--E--D--     wherein D represents a 1,4-piperidinylene group bound via the 1-position to E;   E represents an ethylene group; and   F represents a carbonyl group substituted by a hydroxy group or by a C 1-4  -alkoxy group; or a tautomer or salt thereof.     
     
     
       7. 1-(4-amidino-phenyl)-3-imidazolidin-2-one or a salt thereof. 
     
     
       8. A physiologically acceptable addition salt of a compound in accordance with claim 1, 2, 3, 4, 5, 6 or 7, with an organic or inorganic acid or base. 
     
     
       9. A pharmaceutical composition suitable for the treatment of thrombosis, comprising a therapeutically effective amount of a compound in accordance with claim 1, 2, 3, 4, 5, 6 or 7, and one or more inert carriers or diluents. 
     
     
       10. A method for treating thrombosis in a patient, which comprises administering to the patient a therapeutically effective amount of a compound in accordance with claim 1, 2, 3, 4, 5, 6 or 7.